> It is the fault of evolution that we don't have wheels but we don't have to repeat that mistake.

With wheels you can't climb up a steep mountain. Hands and feet allow to hold tight.

With wheels you can't hold as much. Feet can be used as a replacement for an arm for some functions when arms are broken.

If a wheel is partially broken it's close to impossible to use. If a foot is broken I can walk on heel or toes only and bypass some issue.

It's not the best solution for many things, but the flexibility is a big win.

That flexibility isn't needed with machines, though. I can have many machines, I can replace machines, ... so I can optimize for the use case.

And sometimes the use case might be to simulate a human to trick instincts, which recognize "humans" subconciously. Be it in health care or be it an army of machine soldiers walking towards an enemy.